Analog Devices, Inc. has introduced a high performance MEMS microphone developed specifically for hearing aid applications.

When compared to legacy solutions like electret condenser microphones (ECMs), the ADMP801 is not only smaller in size at 7.3 cubic millimeters, but also offers greater performance stability over time, temperature, and environmental changes, produces low equivalent input noise (EIN) at 27 dBA SPL (sound pressure level), and consumes 17 ľA at 1 Vsupply - a fraction of the power consumed by traditional ECMs. The ADMP801 MEMS microphone is available in a surface-mount package measuring 3.35 mm x 2.50 mm x 0.98 mm that is reflow-solder-compatible with no sensitivity degradation.

The ADMP801 is a high quality, ultralow power, analog output, bottom-ported, omnidirectional MEMS microphone designed specifically for hearing aid applications. The device is fully pick-and-place and reflow compatible, offering an option to save on cost using a mechanised assembly process as compared to ECMs that require manual assembly processes. The device claims excellent environmental and temporal stability, and multiple ADMP801 MEMS microphones can be configured in an array to form a directional response, facilitating sound of voice localisation.

Availability and Pricing
The ADMP801 packaged in a 3.35-mm × 2.50-mm × 0.98-mm surface-mount LGA is available now and is priced at $10.78/1K.